-21.18% is the change from 987 to 778
Calculation steps:
[( 778 - 987 ) ÷ 987] x 100 = -21.18%
Formula
Percentage change = [(778 - 987) / 987] x 100
Subtract the new number by the original number
778 - 987 = -209
-209 ÷ 987 = -0.21175278622087132
-0.21175278622087132 x 100 = -21.18%