-82.45% is the change from 564 to 99
Calculation steps:
[( 99 - 564 ) ÷ 564] x 100 = -82.45%
Formula
Percentage change = [(99 - 564) / 564] x 100
Subtract the new number by the original number
99 - 564 = -465
-465 ÷ 564 = -0.824468085106383
-0.824468085106383 x 100 = -82.45%