-19.95% is the change from 386 to 309
Calculation steps:
[( 309 - 386 ) ÷ 386] x 100 = -19.95%
Formula
Percentage change = [(309 - 386) / 386] x 100
Subtract the new number by the original number
309 - 386 = -77
-77 ÷ 386 = -0.19948186528497408
-0.19948186528497408 x 100 = -19.95%