-18.02% is the change from 827 to 678
Calculation steps:
[( 678 - 827 ) ÷ 827] x 100 = -18.02%
Formula
Percentage change = [(678 - 827) / 827] x 100
Subtract the new number by the original number
678 - 827 = -149
-149 ÷ 827 = -0.18016928657799275
-0.18016928657799275 x 100 = -18.02%