340% is the change from 215 to 946
Calculation steps:
[( 946 - 215 ) ÷ 215] x 100 = 340%
Formula
Percentage change = [(946 - 215) / 215] x 100
Subtract the new number by the original number
946 - 215 = 731
731 ÷ 215 = 3.4
3.4 x 100 = 340%
Example