-71.5% is the change from 635 to 181
Calculation steps:
[( 181 - 635 ) ÷ 635] x 100 = -71.5%
Formula
Percentage change = [(181 - 635) / 635] x 100
Subtract the new number by the original number
181 - 635 = -454
-454 ÷ 635 = -0.7149606299212599
-0.7149606299212599 x 100 = -71.5%