-20.82% is the change from 970 to 768
Calculation steps:
[( 768 - 970 ) ÷ 970] x 100 = -20.82%
Formula
Percentage change = [(768 - 970) / 970] x 100
Subtract the new number by the original number
768 - 970 = -202
-202 ÷ 970 = -0.20824742268041238
-0.20824742268041238 x 100 = -20.82%