64.62% is the change from 342 to 563
Calculation steps:
[( 563 - 342 ) ÷ 342] x 100 = 64.62%
Formula
Percentage change = [(563 - 342) / 342] x 100
Subtract the new number by the original number
563 - 342 = 221
221 ÷ 342 = 0.6461988304093568
0.6461988304093568 x 100 = 64.62%