-34.74% is the change from 970 to 633
Calculation steps:
[( 633 - 970 ) ÷ 970] x 100 = -34.74%
Formula
Percentage change = [(633 - 970) / 970] x 100
Subtract the new number by the original number
633 - 970 = -337
-337 ÷ 970 = -0.3474226804123711
-0.3474226804123711 x 100 = -34.74%