-64.4% is the change from 309 to 110
Calculation steps:
[( 110 - 309 ) ÷ 309] x 100 = -64.4%
Formula
Percentage change = [(110 - 309) / 309] x 100
Subtract the new number by the original number
110 - 309 = -199
-199 ÷ 309 = -0.6440129449838188
-0.6440129449838188 x 100 = -64.4%