56.26% is the change from 423 to 661
Calculation steps:
[( 661 - 423 ) ÷ 423] x 100 = 56.26%
Formula
Percentage change = [(661 - 423) / 423] x 100
Subtract the new number by the original number
661 - 423 = 238
238 ÷ 423 = 0.5626477541371159
0.5626477541371159 x 100 = 56.26%