-34.75% is the change from 823 to 537
Calculation steps:
[( 537 - 823 ) ÷ 823] x 100 = -34.75%
Formula
Percentage change = [(537 - 823) / 823] x 100
Subtract the new number by the original number
537 - 823 = -286
-286 ÷ 823 = -0.34750911300121506
-0.34750911300121506 x 100 = -34.75%