343.06% is the change from 216 to 957
Calculation steps:
[( 957 - 216 ) ÷ 216] x 100 = 343.06%
Formula
Percentage change = [(957 - 216) / 216] x 100
Subtract the new number by the original number
957 - 216 = 741
741 ÷ 216 = 3.4305555555555554
3.4305555555555554 x 100 = 343.06%