-91.18% is the change from 578 to 51
Calculation steps:
[( 51 - 578 ) ÷ 578] x 100 = -91.18%
Formula
Percentage change = [(51 - 578) / 578] x 100
Subtract the new number by the original number
51 - 578 = -527
-527 ÷ 578 = -0.9117647058823529
-0.9117647058823529 x 100 = -91.18%