Total world wind power capacity increased 85% from 2010 to 2014
"Cumulative capacity of world wind power in 2010: 200 gigawatts"
"Cumulative capacity of world wind power in 2014: 370 gigawatts"
Calculation: (370-200)/200=0.85x100=85%
Miles Schneiderman,Tony Manno, "The Page That Counts",Yes!Magazine, no. 75 (Fall 2015): 15.