-6.6% is the change from 833 to 778
Calculation steps:
[( 778 - 833 ) ÷ 833] x 100 = -6.6%
Formula
Percentage change = [(778 - 833) / 833] x 100
Subtract the new number by the original number
778 - 833 = -55
-55 ÷ 833 = -0.06602641056422569
-0.06602641056422569 x 100 = -6.6%