-81.86% is the change from 838 to 152
Calculation steps:
[( 152 - 838 ) ÷ 838] x 100 = -81.86%
Formula
Percentage change = [(152 - 838) / 838] x 100
Subtract the new number by the original number
152 - 838 = -686
-686 ÷ 838 = -0.8186157517899761
-0.8186157517899761 x 100 = -81.86%