234.3% is the change from 242 to 809
Calculation steps:
[( 809 - 242 ) ÷ 242] x 100 = 234.3%
Formula
Percentage change = [(809 - 242) / 242] x 100
Subtract the new number by the original number
809 - 242 = 567
567 ÷ 242 = 2.34297520661157
2.34297520661157 x 100 = 234.3%