49.2% is the change from 624 to 931
Calculation steps:
[( 931 - 624 ) ÷ 624] x 100 = 49.2%
Formula
Percentage change = [(931 - 624) / 624] x 100
Subtract the new number by the original number
931 - 624 = 307
307 ÷ 624 = 0.49198717948717946
0.49198717948717946 x 100 = 49.2%