-1.96% is the change from 970 to 951
Calculation steps:
[( 951 - 970 ) ÷ 970] x 100 = -1.96%
Formula
Percentage change = [(951 - 970) / 970] x 100
Subtract the new number by the original number
951 - 970 = -19
-19 ÷ 970 = -0.01958762886597938
-0.01958762886597938 x 100 = -1.96%