-54% is the change from 913 to 420
Calculation steps:
[( 420 - 913 ) ÷ 913] x 100 = -54%
Formula
Percentage change = [(420 - 913) / 913] x 100
Subtract the new number by the original number
420 - 913 = -493
-493 ÷ 913 = -0.5399780941949617
-0.5399780941949617 x 100 = -54%