-32.27% is the change from 970 to 657
Calculation steps:
[( 657 - 970 ) ÷ 970] x 100 = -32.27%
Formula
Percentage change = [(657 - 970) / 970] x 100
Subtract the new number by the original number
657 - 970 = -313
-313 ÷ 970 = -0.32268041237113404
-0.32268041237113404 x 100 = -32.27%