-71.7% is the change from 908 to 257
Calculation steps:
[( 257 - 908 ) ÷ 908] x 100 = -71.7%
Formula
Percentage change = [(257 - 908) / 908] x 100
Subtract the new number by the original number
257 - 908 = -651
-651 ÷ 908 = -0.7169603524229075
-0.7169603524229075 x 100 = -71.7%