-83.81% is the change from 970 to 157
Calculation steps:
[( 157 - 970 ) ÷ 970] x 100 = -83.81%
Formula
Percentage change = [(157 - 970) / 970] x 100
Subtract the new number by the original number
157 - 970 = -813
-813 ÷ 970 = -0.8381443298969072
-0.8381443298969072 x 100 = -83.81%