89.76% is the change from 420 to 797
Calculation steps:
[( 797 - 420 ) ÷ 420] x 100 = 89.76%
Formula
Percentage change = [(797 - 420) / 420] x 100
Subtract the new number by the original number
797 - 420 = 377
377 ÷ 420 = 0.8976190476190476
0.8976190476190476 x 100 = 89.76%