-72.03% is the change from 919 to 257
Calculation steps:
[( 257 - 919 ) ÷ 919] x 100 = -72.03%
Formula
Percentage change = [(257 - 919) / 919] x 100
Subtract the new number by the original number
257 - 919 = -662
-662 ÷ 919 = -0.720348204570185
-0.720348204570185 x 100 = -72.03%