87.61% is the change from 355 to 666
Calculation steps:
[( 666 - 355 ) ÷ 355] x 100 = 87.61%
Formula
Percentage change = [(666 - 355) / 355] x 100
Subtract the new number by the original number
666 - 355 = 311
311 ÷ 355 = 0.8760563380281691
0.8760563380281691 x 100 = 87.61%