-82.8% is the change from 913 to 157
Calculation steps:
[( 157 - 913 ) ÷ 913] x 100 = -82.8%
Formula
Percentage change = [(157 - 913) / 913] x 100
Subtract the new number by the original number
157 - 913 = -756
-756 ÷ 913 = -0.828039430449069
-0.828039430449069 x 100 = -82.8%