-78.29% is the change from 829 to 180
Calculation steps:
[( 180 - 829 ) ÷ 829] x 100 = -78.29%
Formula
Percentage change = [(180 - 829) / 829] x 100
Subtract the new number by the original number
180 - 829 = -649
-649 ÷ 829 = -0.7828709288299156
-0.7828709288299156 x 100 = -78.29%