66.15% is the change from 325 to 540
Calculation steps:
[( 540 - 325 ) ÷ 325] x 100 = 66.15%
Formula
Percentage change = [(540 - 325) / 325] x 100
Subtract the new number by the original number
540 - 325 = 215
215 ÷ 325 = 0.6615384615384615
0.6615384615384615 x 100 = 66.15%