138.68% is the change from 212 to 506
Calculation steps:
[( 506 - 212 ) ÷ 212] x 100 = 138.68%
Formula
Percentage change = [(506 - 212) / 212] x 100
Subtract the new number by the original number
506 - 212 = 294
294 ÷ 212 = 1.3867924528301887
1.3867924528301887 x 100 = 138.68%