-34.52% is the change from 817 to 535
Calculation steps:
[( 535 - 817 ) ÷ 817] x 100 = -34.52%
Formula
Percentage change = [(535 - 817) / 817] x 100
Subtract the new number by the original number
535 - 817 = -282
-282 ÷ 817 = -0.34516523867809057
-0.34516523867809057 x 100 = -34.52%