-16.71% is the change from 814 to 678
Calculation steps:
[( 678 - 814 ) ÷ 814] x 100 = -16.71%
Formula
Percentage change = [(678 - 814) / 814] x 100
Subtract the new number by the original number
678 - 814 = -136
-136 ÷ 814 = -0.16707616707616707
-0.16707616707616707 x 100 = -16.71%