-78.34% is the change from 457 to 99
Calculation steps:
[( 99 - 457 ) ÷ 457] x 100 = -78.34%
Formula
Percentage change = [(99 - 457) / 457] x 100
Subtract the new number by the original number
99 - 457 = -358
-358 ÷ 457 = -0.7833698030634574
-0.7833698030634574 x 100 = -78.34%