95% is the change from 340 to 663
Calculation steps:
[( 663 - 340 ) ÷ 340] x 100 = 95%
Formula
Percentage change = [(663 - 340) / 340] x 100
Subtract the new number by the original number
663 - 340 = 323
323 ÷ 340 = 0.95
0.95 x 100 = 95%
Example