48.03% is the change from 660 to 977
Calculation steps:
[( 977 - 660 ) ÷ 660] x 100 = 48.03%
Formula
Percentage change = [(977 - 660) / 660] x 100
Subtract the new number by the original number
977 - 660 = 317
317 ÷ 660 = 0.4803030303030303
0.4803030303030303 x 100 = 48.03%