-80.39% is the change from 51 to 10
Calculation steps:
[( 10 - 51 ) ÷ 51] x 100 = -80.39%
Formula
Percentage change = [(10 - 51) / 51] x 100
Subtract the new number by the original number
10 - 51 = -41
-41 ÷ 51 = -0.803921568627451
-0.803921568627451 x 100 = -80.39%