55.5% is the change from 427 to 664
Calculation steps:
[( 664 - 427 ) ÷ 427] x 100 = 55.5%
Formula
Percentage change = [(664 - 427) / 427] x 100
Subtract the new number by the original number
664 - 427 = 237
237 ÷ 427 = 0.5550351288056206
0.5550351288056206 x 100 = 55.5%