-76.17% is the change from 214 to 51
Calculation steps:
[( 51 - 214 ) ÷ 214] x 100 = -76.17%
Formula
Percentage change = [(51 - 214) / 214] x 100
Subtract the new number by the original number
51 - 214 = -163
-163 ÷ 214 = -0.7616822429906542
-0.7616822429906542 x 100 = -76.17%