-66.27% is the change from 919 to 310
Calculation steps:
[( 310 - 919 ) ÷ 919] x 100 = -66.27%
Formula
Percentage change = [(310 - 919) / 919] x 100
Subtract the new number by the original number
310 - 919 = -609
-609 ÷ 919 = -0.6626768226332971
-0.6626768226332971 x 100 = -66.27%