-81.62% is the change from 838 to 154
Calculation steps:
[( 154 - 838 ) ÷ 838] x 100 = -81.62%
Formula
Percentage change = [(154 - 838) / 838] x 100
Subtract the new number by the original number
154 - 838 = -684
-684 ÷ 838 = -0.8162291169451074
-0.8162291169451074 x 100 = -81.62%