73.55% is the change from 242 to 420
Calculation steps:
[( 420 - 242 ) ÷ 242] x 100 = 73.55%
Formula
Percentage change = [(420 - 242) / 242] x 100
Subtract the new number by the original number
420 - 242 = 178
178 ÷ 242 = 0.7355371900826446
0.7355371900826446 x 100 = 73.55%