150% is the change from 206 to 515
Calculation steps:
[( 515 - 206 ) ÷ 206] x 100 = 150%
Formula
Percentage change = [(515 - 206) / 206] x 100
Subtract the new number by the original number
515 - 206 = 309
309 ÷ 206 = 1.5
1.5 x 100 = 150%
Example