-67.92% is the change from 159 to 51
Calculation steps:
[( 51 - 159 ) ÷ 159] x 100 = -67.92%
Formula
Percentage change = [(51 - 159) / 159] x 100
Subtract the new number by the original number
51 - 159 = -108
-108 ÷ 159 = -0.6792452830188679
-0.6792452830188679 x 100 = -67.92%