-77.98% is the change from 277 to 61
Calculation steps:
[( 61 - 277 ) ÷ 277] x 100 = -77.98%
Formula
Percentage change = [(61 - 277) / 277] x 100
Subtract the new number by the original number
61 - 277 = -216
-216 ÷ 277 = -0.779783393501805
-0.779783393501805 x 100 = -77.98%