98.63% is the change from 291 to 578
Calculation steps:
[( 578 - 291 ) ÷ 291] x 100 = 98.63%
Formula
Percentage change = [(578 - 291) / 291] x 100
Subtract the new number by the original number
578 - 291 = 287
287 ÷ 291 = 0.9862542955326461
0.9862542955326461 x 100 = 98.63%