-78.86% is the change from 842 to 178
Calculation steps:
[( 178 - 842 ) ÷ 842] x 100 = -78.86%
Formula
Percentage change = [(178 - 842) / 842] x 100
Subtract the new number by the original number
178 - 842 = -664
-664 ÷ 842 = -0.7885985748218527
-0.7885985748218527 x 100 = -78.86%