-90.63% is the change from 544 to 51
Calculation steps:
[( 51 - 544 ) ÷ 544] x 100 = -90.63%
Formula
Percentage change = [(51 - 544) / 544] x 100
Subtract the new number by the original number
51 - 544 = -493
-493 ÷ 544 = -0.90625
-0.90625 x 100 = -90.63%