85.6% is the change from 243 to 451
Calculation steps:
[( 451 - 243 ) ÷ 243] x 100 = 85.6%
Formula
Percentage change = [(451 - 243) / 243] x 100
Subtract the new number by the original number
451 - 243 = 208
208 ÷ 243 = 0.8559670781893004
0.8559670781893004 x 100 = 85.6%