-91.18% is the change from 612 to 54
Calculation steps:
[( 54 - 612 ) ÷ 612] x 100 = -91.18%
Formula
Percentage change = [(54 - 612) / 612] x 100
Subtract the new number by the original number
54 - 612 = -558
-558 ÷ 612 = -0.9117647058823529
-0.9117647058823529 x 100 = -91.18%