80.85% is the change from 355 to 642
Calculation steps:
[( 642 - 355 ) ÷ 355] x 100 = 80.85%
Formula
Percentage change = [(642 - 355) / 355] x 100
Subtract the new number by the original number
642 - 355 = 287
287 ÷ 355 = 0.8084507042253521
0.8084507042253521 x 100 = 80.85%