-58.57% is the change from 963 to 399
Calculation steps:
[( 399 - 963 ) ÷ 963] x 100 = -58.57%
Formula
Percentage change = [(399 - 963) / 963] x 100
Subtract the new number by the original number
399 - 963 = -564
-564 ÷ 963 = -0.5856697819314641
-0.5856697819314641 x 100 = -58.57%