-67.52% is the change from 157 to 51
Calculation steps:
[( 51 - 157 ) ÷ 157] x 100 = -67.52%
Formula
Percentage change = [(51 - 157) / 157] x 100
Subtract the new number by the original number
51 - 157 = -106
-106 ÷ 157 = -0.6751592356687898
-0.6751592356687898 x 100 = -67.52%