55.9% is the change from 424 to 661
Calculation steps:
[( 661 - 424 ) ÷ 424] x 100 = 55.9%
Formula
Percentage change = [(661 - 424) / 424] x 100
Subtract the new number by the original number
661 - 424 = 237
237 ÷ 424 = 0.5589622641509434
0.5589622641509434 x 100 = 55.9%