-34.43% is the change from 970 to 636
Calculation steps:
[( 636 - 970 ) ÷ 970] x 100 = -34.43%
Formula
Percentage change = [(636 - 970) / 970] x 100
Subtract the new number by the original number
636 - 970 = -334
-334 ÷ 970 = -0.3443298969072165
-0.3443298969072165 x 100 = -34.43%