100% is the change from 264 to 528
Calculation steps:
[( 528 - 264 ) ÷ 264] x 100 = 100%
Formula
Percentage change = [(528 - 264) / 264] x 100
Subtract the new number by the original number
528 - 264 = 264
264 ÷ 264 = 1
1 x 100 = 100%
Example