-16.13% is the change from 930 to 780
Calculation steps:
[( 780 - 930 ) ÷ 930] x 100 = -16.13%
Formula
Percentage change = [(780 - 930) / 930] x 100
Subtract the new number by the original number
780 - 930 = -150
-150 ÷ 930 = -0.16129032258064516
-0.16129032258064516 x 100 = -16.13%