45% is the change from 660 to 957
Calculation steps:
[( 957 - 660 ) ÷ 660] x 100 = 45%
Formula
Percentage change = [(957 - 660) / 660] x 100
Subtract the new number by the original number
957 - 660 = 297
297 ÷ 660 = 0.45
0.45 x 100 = 45%
Example