-87.75% is the change from 457 to 56
Calculation steps:
[( 56 - 457 ) ÷ 457] x 100 = -87.75%
Formula
Percentage change = [(56 - 457) / 457] x 100
Subtract the new number by the original number
56 - 457 = -401
-401 ÷ 457 = -0.8774617067833698
-0.8774617067833698 x 100 = -87.75%