-78.48% is the change from 237 to 51
Calculation steps:
[( 51 - 237 ) ÷ 237] x 100 = -78.48%
Formula
Percentage change = [(51 - 237) / 237] x 100
Subtract the new number by the original number
51 - 237 = -186
-186 ÷ 237 = -0.7848101265822784
-0.7848101265822784 x 100 = -78.48%