51.14% is the change from 657 to 993
Calculation steps:
[( 993 - 657 ) ÷ 657] x 100 = 51.14%
Formula
Percentage change = [(993 - 657) / 657] x 100
Subtract the new number by the original number
993 - 657 = 336
336 ÷ 657 = 0.5114155251141552
0.5114155251141552 x 100 = 51.14%