-71.19% is the change from 177 to 51
Calculation steps:
[( 51 - 177 ) ÷ 177] x 100 = -71.19%
Formula
Percentage change = [(51 - 177) / 177] x 100
Subtract the new number by the original number
51 - 177 = -126
-126 ÷ 177 = -0.711864406779661
-0.711864406779661 x 100 = -71.19%