98.21% is the change from 336 to 666
Calculation steps:
[( 666 - 336 ) ÷ 336] x 100 = 98.21%
Formula
Percentage change = [(666 - 336) / 336] x 100
Subtract the new number by the original number
666 - 336 = 330
330 ÷ 336 = 0.9821428571428571
0.9821428571428571 x 100 = 98.21%