-72.91% is the change from 635 to 172
Calculation steps:
[( 172 - 635 ) ÷ 635] x 100 = -72.91%
Formula
Percentage change = [(172 - 635) / 635] x 100
Subtract the new number by the original number
172 - 635 = -463
-463 ÷ 635 = -0.7291338582677165
-0.7291338582677165 x 100 = -72.91%