-16.19% is the change from 970 to 813
Calculation steps:
[( 813 - 970 ) ÷ 970] x 100 = -16.19%
Formula
Percentage change = [(813 - 970) / 970] x 100
Subtract the new number by the original number
813 - 970 = -157
-157 ÷ 970 = -0.1618556701030928
-0.1618556701030928 x 100 = -16.19%