-83.85% is the change from 972 to 157
Calculation steps:
[( 157 - 972 ) ÷ 972] x 100 = -83.85%
Formula
Percentage change = [(157 - 972) / 972] x 100
Subtract the new number by the original number
157 - 972 = -815
-815 ÷ 972 = -0.838477366255144
-0.838477366255144 x 100 = -83.85%