129.64% is the change from 280 to 643
Calculation steps:
[( 643 - 280 ) ÷ 280] x 100 = 129.64%
Formula
Percentage change = [(643 - 280) / 280] x 100
Subtract the new number by the original number
643 - 280 = 363
363 ÷ 280 = 1.2964285714285715
1.2964285714285715 x 100 = 129.64%