-50.67% is the change from 817 to 403
Calculation steps:
[( 403 - 817 ) ÷ 817] x 100 = -50.67%
Formula
Percentage change = [(403 - 817) / 817] x 100
Subtract the new number by the original number
403 - 817 = -414
-414 ÷ 817 = -0.5067319461444308
-0.5067319461444308 x 100 = -50.67%