45.48% is the change from 420 to 611
Calculation steps:
[( 611 - 420 ) ÷ 420] x 100 = 45.48%
Formula
Percentage change = [(611 - 420) / 420] x 100
Subtract the new number by the original number
611 - 420 = 191
191 ÷ 420 = 0.45476190476190476
0.45476190476190476 x 100 = 45.48%