-13.77% is the change from 951 to 820
Calculation steps:
[( 820 - 951 ) ÷ 951] x 100 = -13.77%
Formula
Percentage change = [(820 - 951) / 951] x 100
Subtract the new number by the original number
820 - 951 = -131
-131 ÷ 951 = -0.1377497371188223
-0.1377497371188223 x 100 = -13.77%