-21.29% is the change from 310 to 244
Calculation steps:
[( 244 - 310 ) ÷ 310] x 100 = -21.29%
Formula
Percentage change = [(244 - 310) / 310] x 100
Subtract the new number by the original number
244 - 310 = -66
-66 ÷ 310 = -0.2129032258064516
-0.2129032258064516 x 100 = -21.29%