128.37% is the change from 215 to 491
Calculation steps:
[( 491 - 215 ) ÷ 215] x 100 = 128.37%
Formula
Percentage change = [(491 - 215) / 215] x 100
Subtract the new number by the original number
491 - 215 = 276
276 ÷ 215 = 1.283720930232558
1.283720930232558 x 100 = 128.37%