-59.57% is the change from 987 to 399
Calculation steps:
[( 399 - 987 ) ÷ 987] x 100 = -59.57%
Formula
Percentage change = [(399 - 987) / 987] x 100
Subtract the new number by the original number
399 - 987 = -588
-588 ÷ 987 = -0.5957446808510638
-0.5957446808510638 x 100 = -59.57%