-73.02% is the change from 189 to 51
Calculation steps:
[( 51 - 189 ) ÷ 189] x 100 = -73.02%
Formula
Percentage change = [(51 - 189) / 189] x 100
Subtract the new number by the original number
51 - 189 = -138
-138 ÷ 189 = -0.7301587301587301
-0.7301587301587301 x 100 = -73.02%