85.3% is the change from 347 to 643
Calculation steps:
[( 643 - 347 ) ÷ 347] x 100 = 85.3%
Formula
Percentage change = [(643 - 347) / 347] x 100
Subtract the new number by the original number
643 - 347 = 296
296 ÷ 347 = 0.8530259365994236
0.8530259365994236 x 100 = 85.3%