250% is the change from 212 to 742
Calculation steps:
[( 742 - 212 ) ÷ 212] x 100 = 250%
Formula
Percentage change = [(742 - 212) / 212] x 100
Subtract the new number by the original number
742 - 212 = 530
530 ÷ 212 = 2.5
2.5 x 100 = 250%
Example