58.06% is the change from 217 to 343
Calculation steps:
[( 343 - 217 ) ÷ 217] x 100 = 58.06%
Formula
Percentage change = [(343 - 217) / 217] x 100
Subtract the new number by the original number
343 - 217 = 126
126 ÷ 217 = 0.5806451612903226
0.5806451612903226 x 100 = 58.06%