345.12% is the change from 215 to 957
Calculation steps:
[( 957 - 215 ) ÷ 215] x 100 = 345.12%
Formula
Percentage change = [(957 - 215) / 215] x 100
Subtract the new number by the original number
957 - 215 = 742
742 ÷ 215 = 3.4511627906976745
3.4511627906976745 x 100 = 345.12%