-81.91% is the change from 951 to 172
Calculation steps:
[( 172 - 951 ) ÷ 951] x 100 = -81.91%
Formula
Percentage change = [(172 - 951) / 951] x 100
Subtract the new number by the original number
172 - 951 = -779
-779 ÷ 951 = -0.8191377497371188
-0.8191377497371188 x 100 = -81.91%