50.24% is the change from 615 to 924
Calculation steps:
[( 924 - 615 ) ÷ 615] x 100 = 50.24%
Formula
Percentage change = [(924 - 615) / 615] x 100
Subtract the new number by the original number
924 - 615 = 309
309 ÷ 615 = 0.5024390243902439
0.5024390243902439 x 100 = 50.24%