54.44% is the change from 428 to 661
Calculation steps:
[( 661 - 428 ) ÷ 428] x 100 = 54.44%
Formula
Percentage change = [(661 - 428) / 428] x 100
Subtract the new number by the original number
661 - 428 = 233
233 ÷ 428 = 0.544392523364486
0.544392523364486 x 100 = 54.44%