Complex sentence: Ultimately, 75 of Lonely Planet's 383 full-time employees were made redundant--the decision was primarily Houghton's, but he had also consulted with Kelley prior to the implementation of his plan.
Split into simpler sentences: Ultimately, 75 of Lonely Planet's 383 full-time employees were made redundant. Houghton claimed the decision was primarily his own, but that he had consulted with Kelley prior to the implementation of his plan.