-61.65% is the change from 133 to 51
Calculation steps:
[( 51 - 133 ) ÷ 133] x 100 = -61.65%
Formula
Percentage change = [(51 - 133) / 133] x 100
Subtract the new number by the original number
51 - 133 = -82
-82 ÷ 133 = -0.6165413533834586
-0.6165413533834586 x 100 = -61.65%