400% is the change from 56 to 280
Calculation steps:
[( 280 - 56 ) ÷ 56] x 100 = 400%
Formula
Percentage change = [(280 - 56) / 56] x 100
Subtract the new number by the original number
280 - 56 = 224
224 ÷ 56 = 4
4 x 100 = 400%
Example