-89.29% is the change from 635 to 68
Calculation steps:
[( 68 - 635 ) ÷ 635] x 100 = -89.29%
Formula
Percentage change = [(68 - 635) / 635] x 100
Subtract the new number by the original number
68 - 635 = -567
-567 ÷ 635 = -0.8929133858267716
-0.8929133858267716 x 100 = -89.29%