Original sentence: ", while some analysts claim the Chinese growth rate is overstated by 2 to 3 percentage points.In recent years, government claimed growth numbers have come under increased scrutiny, with financial and economic observers claiming the government has been inflating its economic output.Some analysts have suggested China's official figures for GDP growth are off by as much as 50%
Edited sentence: However, a more detailed and scholarly approach in 2017 pointed in the opposite direction.In 2015, one US-focused financial commentator suggested China's official figures for GDP growth might be double the actual rate