107.48% is the change from 321 to 666
Calculation steps:
[( 666 - 321 ) ÷ 321] x 100 = 107.48%
Formula
Percentage change = [(666 - 321) / 321] x 100
Subtract the new number by the original number
666 - 321 = 345
345 ÷ 321 = 1.074766355140187
1.074766355140187 x 100 = 107.48%