-94.75% is the change from 971 to 51
Calculation steps:
[( 51 - 971 ) ÷ 971] x 100 = -94.75%
Formula
Percentage change = [(51 - 971) / 971] x 100
Subtract the new number by the original number
51 - 971 = -920
-920 ÷ 971 = -0.9474768280123584
-0.9474768280123584 x 100 = -94.75%