49.25% is the change from 666 to 994
Calculation steps:
[( 994 - 666 ) ÷ 666] x 100 = 49.25%
Formula
Percentage change = [(994 - 666) / 666] x 100
Subtract the new number by the original number
994 - 666 = 328
328 ÷ 666 = 0.4924924924924925
0.4924924924924925 x 100 = 49.25%