-66.95% is the change from 829 to 274
Calculation steps:
[( 274 - 829 ) ÷ 829] x 100 = -66.95%
Formula
Percentage change = [(274 - 829) / 829] x 100
Subtract the new number by the original number
274 - 829 = -555
-555 ÷ 829 = -0.669481302774427
-0.669481302774427 x 100 = -66.95%