61.5% is the change from 200 to 323
Calculation steps:
[( 323 - 200 ) ÷ 200] x 100 = 61.5%
Formula
Percentage change = [(323 - 200) / 200] x 100
Subtract the new number by the original number
323 - 200 = 123
123 ÷ 200 = 0.615
0.615 x 100 = 61.5%
Example