4250% is the change from 12 to 522
Calculation steps:
[( 522 - 12 ) ÷ 12] x 100 = 4250%
Formula
Percentage change = [(522 - 12) / 12] x 100
Subtract the new number by the original number
522 - 12 = 510
510 ÷ 12 = 42.5
42.5 x 100 = 4250%
Example