-35.1% is the change from 829 to 538
Calculation steps:
[( 538 - 829 ) ÷ 829] x 100 = -35.1%
Formula
Percentage change = [(538 - 829) / 829] x 100
Subtract the new number by the original number
538 - 829 = -291
-291 ÷ 829 = -0.35102533172496986
-0.35102533172496986 x 100 = -35.1%