-32% is the change from 947 to 644
Calculation steps:
[( 644 - 947 ) ÷ 947] x 100 = -32%
Formula
Percentage change = [(644 - 947) / 947] x 100
Subtract the new number by the original number
644 - 947 = -303
-303 ÷ 947 = -0.3199577613516367
-0.3199577613516367 x 100 = -32%