82.03% is the change from 345 to 628
Calculation steps:
[( 628 - 345 ) ÷ 345] x 100 = 82.03%
Formula
Percentage change = [(628 - 345) / 345] x 100
Subtract the new number by the original number
628 - 345 = 283
283 ÷ 345 = 0.8202898550724638
0.8202898550724638 x 100 = 82.03%