-87.1% is the change from 930 to 120
Calculation steps:
[( 120 - 930 ) ÷ 930] x 100 = -87.1%
Formula
Percentage change = [(120 - 930) / 930] x 100
Subtract the new number by the original number
120 - 930 = -810
-810 ÷ 930 = -0.8709677419354839
-0.8709677419354839 x 100 = -87.1%