60% is the change from 320 to 512
Calculation steps:
[( 512 - 320 ) ÷ 320] x 100 = 60%
Formula
Percentage change = [(512 - 320) / 320] x 100
Subtract the new number by the original number
512 - 320 = 192
192 ÷ 320 = 0.6
0.6 x 100 = 60%
Example