-38.07% is the change from 415 to 257
Calculation steps:
[( 257 - 415 ) ÷ 415] x 100 = -38.07%
Formula
Percentage change = [(257 - 415) / 415] x 100
Subtract the new number by the original number
257 - 415 = -158
-158 ÷ 415 = -0.38072289156626504
-0.38072289156626504 x 100 = -38.07%