-81.89% is the change from 950 to 172
Calculation steps:
[( 172 - 950 ) ÷ 950] x 100 = -81.89%
Formula
Percentage change = [(172 - 950) / 950] x 100
Subtract the new number by the original number
172 - 950 = -778
-778 ÷ 950 = -0.8189473684210526
-0.8189473684210526 x 100 = -81.89%