-52.95% is the change from 457 to 215
Calculation steps:
[( 215 - 457 ) ÷ 457] x 100 = -52.95%
Formula
Percentage change = [(215 - 457) / 457] x 100
Subtract the new number by the original number
215 - 457 = -242
-242 ÷ 457 = -0.5295404814004376
-0.5295404814004376 x 100 = -52.95%