39.64% is the change from 666 to 930
Calculation steps:
[( 930 - 666 ) ÷ 666] x 100 = 39.64%
Formula
Percentage change = [(930 - 666) / 666] x 100
Subtract the new number by the original number
930 - 666 = 264
264 ÷ 666 = 0.3963963963963964
0.3963963963963964 x 100 = 39.64%