-67.72% is the change from 158 to 51
Calculation steps:
[( 51 - 158 ) ÷ 158] x 100 = -67.72%
Formula
Percentage change = [(51 - 158) / 158] x 100
Subtract the new number by the original number
51 - 158 = -107
-107 ÷ 158 = -0.6772151898734177
-0.6772151898734177 x 100 = -67.72%