50.77% is the change from 648 to 977
Calculation steps:
[( 977 - 648 ) ÷ 648] x 100 = 50.77%
Formula
Percentage change = [(977 - 648) / 648] x 100
Subtract the new number by the original number
977 - 648 = 329
329 ÷ 648 = 0.5077160493827161
0.5077160493827161 x 100 = 50.77%