-47.05% is the change from 457 to 242
Calculation steps:
[( 242 - 457 ) ÷ 457] x 100 = -47.05%
Formula
Percentage change = [(242 - 457) / 457] x 100
Subtract the new number by the original number
242 - 457 = -215
-215 ÷ 457 = -0.47045951859956237
-0.47045951859956237 x 100 = -47.05%