87.62% is the change from 420 to 788
Calculation steps:
[( 788 - 420 ) ÷ 420] x 100 = 87.62%
Formula
Percentage change = [(788 - 420) / 420] x 100
Subtract the new number by the original number
788 - 420 = 368
368 ÷ 420 = 0.8761904761904762
0.8761904761904762 x 100 = 87.62%