-75.12% is the change from 205 to 51
Calculation steps:
[( 51 - 205 ) ÷ 205] x 100 = -75.12%
Formula
Percentage change = [(51 - 205) / 205] x 100
Subtract the new number by the original number
51 - 205 = -154
-154 ÷ 205 = -0.751219512195122
-0.751219512195122 x 100 = -75.12%