67.6% is the change from 250 to 419
Calculation steps:
[( 419 - 250 ) ÷ 250] x 100 = 67.6%
Formula
Percentage change = [(419 - 250) / 250] x 100
Subtract the new number by the original number
419 - 250 = 169
169 ÷ 250 = 0.676
0.676 x 100 = 67.6%
Example