-61.26% is the change from 999 to 387
Calculation steps:
[( 387 - 999 ) ÷ 999] x 100 = -61.26%
Formula
Percentage change = [(387 - 999) / 999] x 100
Subtract the new number by the original number
387 - 999 = -612
-612 ÷ 999 = -0.6126126126126126
-0.6126126126126126 x 100 = -61.26%