-13.95% is the change from 939 to 808
Calculation steps:
[( 808 - 939 ) ÷ 939] x 100 = -13.95%
Formula
Percentage change = [(808 - 939) / 939] x 100
Subtract the new number by the original number
808 - 939 = -131
-131 ÷ 939 = -0.1395101171458999
-0.1395101171458999 x 100 = -13.95%