-71.65% is the change from 635 to 180
Calculation steps:
[( 180 - 635 ) ÷ 635] x 100 = -71.65%
Formula
Percentage change = [(180 - 635) / 635] x 100
Subtract the new number by the original number
180 - 635 = -455
-455 ÷ 635 = -0.7165354330708661
-0.7165354330708661 x 100 = -71.65%