-35.13% is the change from 817 to 530
Calculation steps:
[( 530 - 817 ) ÷ 817] x 100 = -35.13%
Formula
Percentage change = [(530 - 817) / 817] x 100
Subtract the new number by the original number
530 - 817 = -287
-287 ÷ 817 = -0.35128518971848227
-0.35128518971848227 x 100 = -35.13%