228.79% is the change from 257 to 845
Calculation steps:
[( 845 - 257 ) ÷ 257] x 100 = 228.79%
Formula
Percentage change = [(845 - 257) / 257] x 100
Subtract the new number by the original number
845 - 257 = 588
588 ÷ 257 = 2.2879377431906613
2.2879377431906613 x 100 = 228.79%