-90.43% is the change from 951 to 91
Calculation steps:
[( 91 - 951 ) ÷ 951] x 100 = -90.43%
Formula
Percentage change = [(91 - 951) / 951] x 100
Subtract the new number by the original number
91 - 951 = -860
-860 ÷ 951 = -0.9043112513144059
-0.9043112513144059 x 100 = -90.43%