-48.71% is the change from 817 to 419
Calculation steps:
[( 419 - 817 ) ÷ 817] x 100 = -48.71%
Formula
Percentage change = [(419 - 817) / 817] x 100
Subtract the new number by the original number
419 - 817 = -398
-398 ÷ 817 = -0.48714810281517745
-0.48714810281517745 x 100 = -48.71%