-84.63% is the change from 592 to 91
Calculation steps:
[( 91 - 592 ) ÷ 592] x 100 = -84.63%
Formula
Percentage change = [(91 - 592) / 592] x 100
Subtract the new number by the original number
91 - 592 = -501
-501 ÷ 592 = -0.8462837837837838
-0.8462837837837838 x 100 = -84.63%