50.23% is the change from 661 to 993
Calculation steps:
[( 993 - 661 ) ÷ 661] x 100 = 50.23%
Formula
Percentage change = [(993 - 661) / 661] x 100
Subtract the new number by the original number
993 - 661 = 332
332 ÷ 661 = 0.5022692889561271
0.5022692889561271 x 100 = 50.23%