247.9% is the change from 238 to 828
Calculation steps:
[( 828 - 238 ) ÷ 238] x 100 = 247.9%
Formula
Percentage change = [(828 - 238) / 238] x 100
Subtract the new number by the original number
828 - 238 = 590
590 ÷ 238 = 2.4789915966386555
2.4789915966386555 x 100 = 247.9%