-5.17% is the change from 831 to 788
Calculation steps:
[( 788 - 831 ) ÷ 831] x 100 = -5.17%
Formula
Percentage change = [(788 - 831) / 831] x 100
Subtract the new number by the original number
788 - 831 = -43
-43 ÷ 831 = -0.05174488567990373
-0.05174488567990373 x 100 = -5.17%