-16.8% is the change from 970 to 807
Calculation steps:
[( 807 - 970 ) ÷ 970] x 100 = -16.8%
Formula
Percentage change = [(807 - 970) / 970] x 100
Subtract the new number by the original number
807 - 970 = -163
-163 ÷ 970 = -0.16804123711340208
-0.16804123711340208 x 100 = -16.8%