814% is the change from 50 to 457
Calculation steps:
[( 457 - 50 ) ÷ 50] x 100 = 814%
Formula
Percentage change = [(457 - 50) / 50] x 100
Subtract the new number by the original number
457 - 50 = 407
407 ÷ 50 = 8.14
8.14 x 100 = 814%
Example