-1.94% is the change from 310 to 304
Calculation steps:
[( 304 - 310 ) ÷ 310] x 100 = -1.94%
Formula
Percentage change = [(304 - 310) / 310] x 100
Subtract the new number by the original number
304 - 310 = -6
-6 ÷ 310 = -0.01935483870967742
-0.01935483870967742 x 100 = -1.94%