65.5% is the change from 342 to 566
Calculation steps:
[( 566 - 342 ) ÷ 342] x 100 = 65.5%
Formula
Percentage change = [(566 - 342) / 342] x 100
Subtract the new number by the original number
566 - 342 = 224
224 ÷ 342 = 0.6549707602339181
0.6549707602339181 x 100 = 65.5%