-83.21% is the change from 840 to 141
Calculation steps:
[( 141 - 840 ) ÷ 840] x 100 = -83.21%
Formula
Percentage change = [(141 - 840) / 840] x 100
Subtract the new number by the original number
141 - 840 = -699
-699 ÷ 840 = -0.8321428571428572
-0.8321428571428572 x 100 = -83.21%