-65.12% is the change from 817 to 285
Calculation steps:
[( 285 - 817 ) ÷ 817] x 100 = -65.12%
Formula
Percentage change = [(285 - 817) / 817] x 100
Subtract the new number by the original number
285 - 817 = -532
-532 ÷ 817 = -0.6511627906976745
-0.6511627906976745 x 100 = -65.12%