55.5% is the change from 609 to 947
Calculation steps:
[( 947 - 609 ) ÷ 609] x 100 = 55.5%
Formula
Percentage change = [(947 - 609) / 609] x 100
Subtract the new number by the original number
947 - 609 = 338
338 ÷ 609 = 0.555008210180624
0.555008210180624 x 100 = 55.5%