-15.86% is the change from 927 to 780
Calculation steps:
[( 780 - 927 ) ÷ 927] x 100 = -15.86%
Formula
Percentage change = [(780 - 927) / 927] x 100
Subtract the new number by the original number
780 - 927 = -147
-147 ÷ 927 = -0.15857605177993528
-0.15857605177993528 x 100 = -15.86%