-81.48% is the change from 918 to 170
Calculation steps:
[( 170 - 918 ) ÷ 918] x 100 = -81.48%
Formula
Percentage change = [(170 - 918) / 918] x 100
Subtract the new number by the original number
170 - 918 = -748
-748 ÷ 918 = -0.8148148148148148
-0.8148148148148148 x 100 = -81.48%