107.21% is the change from 319 to 661
Calculation steps:
[( 661 - 319 ) ÷ 319] x 100 = 107.21%
Formula
Percentage change = [(661 - 319) / 319] x 100
Subtract the new number by the original number
661 - 319 = 342
342 ÷ 319 = 1.0721003134796239
1.0721003134796239 x 100 = 107.21%