49.1% is the change from 666 to 993
Calculation steps:
[( 993 - 666 ) ÷ 666] x 100 = 49.1%
Formula
Percentage change = [(993 - 666) / 666] x 100
Subtract the new number by the original number
993 - 666 = 327
327 ÷ 666 = 0.49099099099099097
0.49099099099099097 x 100 = 49.1%