-81.36% is the change from 912 to 170
Calculation steps:
[( 170 - 912 ) ÷ 912] x 100 = -81.36%
Formula
Percentage change = [(170 - 912) / 912] x 100
Subtract the new number by the original number
170 - 912 = -742
-742 ÷ 912 = -0.8135964912280702
-0.8135964912280702 x 100 = -81.36%