-73.23% is the change from 635 to 170
Calculation steps:
[( 170 - 635 ) ÷ 635] x 100 = -73.23%
Formula
Percentage change = [(170 - 635) / 635] x 100
Subtract the new number by the original number
170 - 635 = -465
-465 ÷ 635 = -0.7322834645669292
-0.7322834645669292 x 100 = -73.23%