-96.11% is the change from 591 to 23
Calculation steps:
[( 23 - 591 ) ÷ 591] x 100 = -96.11%
Formula
Percentage change = [(23 - 591) / 591] x 100
Subtract the new number by the original number
23 - 591 = -568
-568 ÷ 591 = -0.961082910321489
-0.961082910321489 x 100 = -96.11%