-11.7% is the change from 778 to 687
Calculation steps:
[( 687 - 778 ) ÷ 778] x 100 = -11.7%
Formula
Percentage change = [(687 - 778) / 778] x 100
Subtract the new number by the original number
687 - 778 = -91
-91 ÷ 778 = -0.11696658097686376
-0.11696658097686376 x 100 = -11.7%