46.7% is the change from 666 to 977
Calculation steps:
[( 977 - 666 ) ÷ 666] x 100 = 46.7%
Formula
Percentage change = [(977 - 666) / 666] x 100
Subtract the new number by the original number
977 - 666 = 311
311 ÷ 666 = 0.466966966966967
0.466966966966967 x 100 = 46.7%