-92.16% is the change from 51 to 4
Calculation steps:
[( 4 - 51 ) ÷ 51] x 100 = -92.16%
Formula
Percentage change = [(4 - 51) / 51] x 100
Subtract the new number by the original number
4 - 51 = -47
-47 ÷ 51 = -0.9215686274509803
-0.9215686274509803 x 100 = -92.16%