103.81% is the change from 420 to 856
Calculation steps:
[( 856 - 420 ) ÷ 420] x 100 = 103.81%
Formula
Percentage change = [(856 - 420) / 420] x 100
Subtract the new number by the original number
856 - 420 = 436
436 ÷ 420 = 1.0380952380952382
1.0380952380952382 x 100 = 103.81%