497.62% is the change from 42 to 251
Calculation steps:
[( 251 - 42 ) ÷ 42] x 100 = 497.62%
Formula
Percentage change = [(251 - 42) / 42] x 100
Subtract the new number by the original number
251 - 42 = 209
209 ÷ 42 = 4.976190476190476
4.976190476190476 x 100 = 497.62%