-77.61% is the change from 987 to 221
Calculation steps:
[( 221 - 987 ) ÷ 987] x 100 = -77.61%
Formula
Percentage change = [(221 - 987) / 987] x 100
Subtract the new number by the original number
221 - 987 = -766
-766 ÷ 987 = -0.7760891590678825
-0.7760891590678825 x 100 = -77.61%