51.52% is the change from 660 to 1000
Calculation steps:
[( 1000 - 660 ) ÷ 660] x 100 = 51.52%
Formula
Percentage change = [(1000 - 660) / 660] x 100
Subtract the new number by the original number
1000 - 660 = 340
340 ÷ 660 = 0.5151515151515151
0.5151515151515151 x 100 = 51.52%