-12.57% is the change from 947 to 828
Calculation steps:
[( 828 - 947 ) ÷ 947] x 100 = -12.57%
Formula
Percentage change = [(828 - 947) / 947] x 100
Subtract the new number by the original number
828 - 947 = -119
-119 ÷ 947 = -0.12565997888067582
-0.12565997888067582 x 100 = -12.57%