-81.75% is the change from 937 to 171
Calculation steps:
[( 171 - 937 ) ÷ 937] x 100 = -81.75%
Formula
Percentage change = [(171 - 937) / 937] x 100
Subtract the new number by the original number
171 - 937 = -766
-766 ÷ 937 = -0.8175026680896478
-0.8175026680896478 x 100 = -81.75%