108.77% is the change from 308 to 643
Calculation steps:
[( 643 - 308 ) ÷ 308] x 100 = 108.77%
Formula
Percentage change = [(643 - 308) / 308] x 100
Subtract the new number by the original number
643 - 308 = 335
335 ÷ 308 = 1.0876623376623376
1.0876623376623376 x 100 = 108.77%