-86.13% is the change from 310 to 43
Calculation steps:
[( 43 - 310 ) ÷ 310] x 100 = -86.13%
Formula
Percentage change = [(43 - 310) / 310] x 100
Subtract the new number by the original number
43 - 310 = -267
-267 ÷ 310 = -0.8612903225806452
-0.8612903225806452 x 100 = -86.13%