137.67% is the change from 215 to 511
Calculation steps:
[( 511 - 215 ) ÷ 215] x 100 = 137.67%
Formula
Percentage change = [(511 - 215) / 215] x 100
Subtract the new number by the original number
511 - 215 = 296
296 ÷ 215 = 1.3767441860465117
1.3767441860465117 x 100 = 137.67%