427.78% is the change from 90 to 475
Calculation steps:
[( 475 - 90 ) ÷ 90] x 100 = 427.78%
Formula
Percentage change = [(475 - 90) / 90] x 100
Subtract the new number by the original number
475 - 90 = 385
385 ÷ 90 = 4.277777777777778
4.277777777777778 x 100 = 427.78%