137.56% is the change from 213 to 506
Calculation steps:
[( 506 - 213 ) ÷ 213] x 100 = 137.56%
Formula
Percentage change = [(506 - 213) / 213] x 100
Subtract the new number by the original number
506 - 213 = 293
293 ÷ 213 = 1.375586854460094
1.375586854460094 x 100 = 137.56%