-81.02% is the change from 906 to 172
Calculation steps:
[( 172 - 906 ) ÷ 906] x 100 = -81.02%
Formula
Percentage change = [(172 - 906) / 906] x 100
Subtract the new number by the original number
172 - 906 = -734
-734 ÷ 906 = -0.8101545253863135
-0.8101545253863135 x 100 = -81.02%