271.9% is the change from 242 to 900
Calculation steps:
[( 900 - 242 ) ÷ 242] x 100 = 271.9%
Formula
Percentage change = [(900 - 242) / 242] x 100
Subtract the new number by the original number
900 - 242 = 658
658 ÷ 242 = 2.71900826446281
2.71900826446281 x 100 = 271.9%