-83.01% is the change from 830 to 141
Calculation steps:
[( 141 - 830 ) ÷ 830] x 100 = -83.01%
Formula
Percentage change = [(141 - 830) / 830] x 100
Subtract the new number by the original number
141 - 830 = -689
-689 ÷ 830 = -0.8301204819277108
-0.8301204819277108 x 100 = -83.01%