-20.78% is the change from 972 to 770
Calculation steps:
[( 770 - 972 ) ÷ 972] x 100 = -20.78%
Formula
Percentage change = [(770 - 972) / 972] x 100
Subtract the new number by the original number
770 - 972 = -202
-202 ÷ 972 = -0.20781893004115226
-0.20781893004115226 x 100 = -20.78%