219.79% is the change from 288 to 921
Calculation steps:
[( 921 - 288 ) ÷ 288] x 100 = 219.79%
Formula
Percentage change = [(921 - 288) / 288] x 100
Subtract the new number by the original number
921 - 288 = 633
633 ÷ 288 = 2.1979166666666665
2.1979166666666665 x 100 = 219.79%