-37.3% is the change from 823 to 516
Calculation steps:
[( 516 - 823 ) ÷ 823] x 100 = -37.3%
Formula
Percentage change = [(516 - 823) / 823] x 100
Subtract the new number by the original number
516 - 823 = -307
-307 ÷ 823 = -0.3730255164034022
-0.3730255164034022 x 100 = -37.3%