-93.1% is the change from 913 to 63
Calculation steps:
[( 63 - 913 ) ÷ 913] x 100 = -93.1%
Formula
Percentage change = [(63 - 913) / 913] x 100
Subtract the new number by the original number
63 - 913 = -850
-850 ÷ 913 = -0.9309967141292442
-0.9309967141292442 x 100 = -93.1%