-31.95% is the change from 817 to 556
Calculation steps:
[( 556 - 817 ) ÷ 817] x 100 = -31.95%
Formula
Percentage change = [(556 - 817) / 817] x 100
Subtract the new number by the original number
556 - 817 = -261
-261 ÷ 817 = -0.31946144430844553
-0.31946144430844553 x 100 = -31.95%