-83.72% is the change from 829 to 135
Calculation steps:
[( 135 - 829 ) ÷ 829] x 100 = -83.72%
Formula
Percentage change = [(135 - 829) / 829] x 100
Subtract the new number by the original number
135 - 829 = -694
-694 ÷ 829 = -0.8371531966224367
-0.8371531966224367 x 100 = -83.72%