-83.57% is the change from 931 to 153
Calculation steps:
[( 153 - 931 ) ÷ 931] x 100 = -83.57%
Formula
Percentage change = [(153 - 931) / 931] x 100
Subtract the new number by the original number
153 - 931 = -778
-778 ÷ 931 = -0.8356605800214822
-0.8356605800214822 x 100 = -83.57%