-48.62% is the change from 977 to 502
Calculation steps:
[( 502 - 977 ) ÷ 977] x 100 = -48.62%
Formula
Percentage change = [(502 - 977) / 977] x 100
Subtract the new number by the original number
502 - 977 = -475
-475 ÷ 977 = -0.48618219037871035
-0.48618219037871035 x 100 = -48.62%