-90.45% is the change from 534 to 51
Calculation steps:
[( 51 - 534 ) ÷ 534] x 100 = -90.45%
Formula
Percentage change = [(51 - 534) / 534] x 100
Subtract the new number by the original number
51 - 534 = -483
-483 ÷ 534 = -0.9044943820224719
-0.9044943820224719 x 100 = -90.45%