-83.51% is the change from 934 to 154
Calculation steps:
[( 154 - 934 ) ÷ 934] x 100 = -83.51%
Formula
Percentage change = [(154 - 934) / 934] x 100
Subtract the new number by the original number
154 - 934 = -780
-780 ÷ 934 = -0.8351177730192719
-0.8351177730192719 x 100 = -83.51%