-88.46% is the change from 442 to 51
Calculation steps:
[( 51 - 442 ) ÷ 442] x 100 = -88.46%
Formula
Percentage change = [(51 - 442) / 442] x 100
Subtract the new number by the original number
51 - 442 = -391
-391 ÷ 442 = -0.8846153846153846
-0.8846153846153846 x 100 = -88.46%