-91.1% is the change from 573 to 51
Calculation steps:
[( 51 - 573 ) ÷ 573] x 100 = -91.1%
Formula
Percentage change = [(51 - 573) / 573] x 100
Subtract the new number by the original number
51 - 573 = -522
-522 ÷ 573 = -0.9109947643979057
-0.9109947643979057 x 100 = -91.1%