215.63% is the change from 288 to 909
Calculation steps:
[( 909 - 288 ) ÷ 288] x 100 = 215.63%
Formula
Percentage change = [(909 - 288) / 288] x 100
Subtract the new number by the original number
909 - 288 = 621
621 ÷ 288 = 2.15625
2.15625 x 100 = 215.63%