80% is the change from 525 to 945
Calculation steps:
[( 945 - 525 ) ÷ 525] x 100 = 80%
Formula
Percentage change = [(945 - 525) / 525] x 100
Subtract the new number by the original number
945 - 525 = 420
420 ÷ 525 = 0.8
0.8 x 100 = 80%
Example