-96.72% is the change from 457 to 15
Calculation steps:
[( 15 - 457 ) ÷ 457] x 100 = -96.72%
Formula
Percentage change = [(15 - 457) / 457] x 100
Subtract the new number by the original number
15 - 457 = -442
-442 ÷ 457 = -0.9671772428884027
-0.9671772428884027 x 100 = -96.72%