-23.15% is the change from 635 to 488
Calculation steps:
[( 488 - 635 ) ÷ 635] x 100 = -23.15%
Formula
Percentage change = [(488 - 635) / 635] x 100
Subtract the new number by the original number
488 - 635 = -147
-147 ÷ 635 = -0.231496062992126
-0.231496062992126 x 100 = -23.15%