85% is the change from 340 to 629
Calculation steps:
[( 629 - 340 ) ÷ 340] x 100 = 85%
Formula
Percentage change = [(629 - 340) / 340] x 100
Subtract the new number by the original number
629 - 340 = 289
289 ÷ 340 = 0.85
0.85 x 100 = 85%
Example